Catalyst Carriers
Catalyst carriers are porous substrate materials that are used in the chemicals and petrochemicals industries for refining liquids and gases into intermediate and end-use products. Refineries around the world convert naturally occurring liquids, gases and intermediates into usable products such as fuels, chemicals, oilsand lubricants. The refining process involves cracking hydrocarbons at high temperatures and pressures in the presence of a catalyst.
Alumina is used in the production of catalyst carriers because of its high temperature inert properties, making it a suitable substrate material to host the catalyst while not degrading its function and also not interacting with the chemical reactants. The pore structure of the catalyst carrier is critically important in the hydrocarbon cracking process, since it is where the reaction is catalyzed. Certain characteristics of the alumina raw material, such as particle size distribution, can influence the pore size and distribution and therefore consistency is vital to making an effective carrier substrate.
Almatis calcined aluminas for catalyst carrier applications include unground, continuous ground and batch ground products. Our products feature tightly controlled particle size distributions and consistent surface areas to ensure a proper pore structure is achieved every time. We also offer different purity levels, particularly related to Na2O content, to meet specific formulation needs. Certain formulations also require a hydraulic ceramic binder and Almatis offers 70% and 80% calcium aluminate cements to meet these needs.
Unground Calcined Aluminas
Primary Crystal Size = 2.1µm
Specific Surface Area = 0.60 m2/g
Na2O Content = 0.03%
Safety Data Sheet
Product Data Sheet
Primary Crystal Size = 1.8µm
Specific Surface Area = 0.70 m2/g
Na2O Content = 0.06%
Primary Crystal Size = 1.7µm
Specific Surface Area = 0.90 m2/g
Na2O Content = 0.06%
Primary Crystal Size = 1.1µm
Specific Surface Area = 1.2 m²/g
Na2O Content = 0.06%
Continuous Ground Calcined Aluminas
Ground Median Size = 3.2µm
Ground Surface Area = 0.80 m²/g
Na2O Content = 0.03%
Ground Median Size = 4.2µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.06%
Ground Median Size = 3.9µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.06%
Ground Median Size = 3.5µm
Ground Surface Area = 0.90 m²/g
Na2O Content = 0.12%
Technical PaperGround Median Size = 2.5µm
Ground Surface Area = 7.5 m²/g
Na2O Content = 0.20%
Batch Ground Reactive Aluminas
Ground Median Size = 0.4µm
Ground Surface Area = 8.8 m²/g
Na2O Content = 0.07%
Ground Median Size = 0.4µm
Ground Surface Area = 7.5 m²/g
Na2O Content = 0.08%
Ground Median Size = 0.6µm
Ground Surface Area = 8.2 m²/g
Na2O Content = 0.07%
BET = 1.0 m²g
D50 = 3.5 µm
Na2O Content = ≤0.03%
BET = 1.2 m²g
D50 = 3.5 µm
Na2O Content = ≤0.01%
Ground Median Size = 3.1µm
Ground Surface Area = 1.1 m²/g
Na2O Content = 0.06%
Cement
70% calcium aluminate cement with high green strength for low and ultra-low cement applications